Device for manually lifting a load with a lever for a cart, suitcase and the like

ABSTRACT

Device for manually lifting a load such as a cart, suitcase and the like, making it easier to ascend and descend staircases and various obstacles. The device has a first part comprising a frame secured to wheels, and handles being fixed to the frame. A second part comprises a load support secured to the wheels and a load being mounted in a fixed manner on the load support, the second part being able to slide with respect to the first part by the action of a telescopic lever arm in order to ascend a step of a staircase in two phases, the telescopic lever arm being fixed to the handles by a first articulation, a second articulation connecting the telescopic lever arm to a transmission which is in turn connected by a third articulation to the load support of the second part.

The present invention relates to a device for manually lifting a loadwith a lever for being used for a cart, a suitcase and the like.

Experience has shown that a user currently encounters difficulties whenascending and descending staircases and various obstacles with a cart ora suitcase.

The device of the invention, which solves these disadvantages, isremarkable in that the manual effort made by the user will besignificantly reduced when ascending and descending staircases andvarious obstacles.

The present invention will be described in detail in the following withreference made to the attached drawings given only by way of example inwhich:

FIG. 1 shows a lateral view of a device according to the inventionshowing the confrontation of various steps at visible angles.

FIG. 2 shows a lateral view of the device according to the invention,

FIG. 3 shows a front view of the device according to the invention,

FIG. 4 shows a front view of the device according to the invention, and

FIG. 5 shows a front view of the device according to the invention withthe largest load,

FIG. 6 shows a lateral view of the device according to the inventionwith the largest load and showing details of the embodiment.

FIG. 1 shows that the device has two parts:

-   -   a first part comprising: a frame 1 integral with the wheels 2,        wherein the wheels 2 and the handles 3 are fixed to the frame 1,    -   a second part comprising: a load support 4 integral with the        wheels 5, the wheels 5 and a load 12 which is mounted in a fixed        manner on the load support 4.

The second part can slide relative to the first part by the action of atelescopic lever arm 10. The action of ascending a staircase step withthe device according to the invention is made in two phases in thefollowing manner:

-   -   during the first phase by turning the telescopic lever arm 10        upward from an initial low position following a circular        movement according to arrow F 1, wherein the second part slides        upward relative to the first part and ascends a staircase step,    -   and then, during the second phase, by turning the telescopic        lever arm 10 downward following a circular movement according to        the arrow F2 until the initial low position of this telescopic        lever arm, the first part ascends for its part onto the same        staircase step.

The telescopic lever arm 10 is fixed to the handles 3 by an articulation9. A second articulation 8 connects the telescopic lever arm 10 to atransmission 6 which is connected for its part by a third articulation 7to the load support 4 of the second part.

FIG. 1 shows that during the phase 2, by turning the telescopic leverarm 10 downward according to arrow F to its initial low position thewheels 5 move the second part in a movement of translation according toarrows G-G′ so that the first part can reach an angle visible on thestaircase edge in order to facilitate the ascent of the first part.

FIG. 2 shows that the device comprises a joining pin 13 with a spring 14joining the frame 1 and load support 4 and allowing the device to movewith its four wheels 2 and 5 on a plane surface.

Referring again to FIG. 1, it can be seen that the joining pin 13 isreleased by a cable 15 and rod 15′, allowing the load support 4 to moverelative to the frame 1.

It can be seen in FIGS. 5 and 6 that the telescopic arm 10 is fixed tothe frame 1 parallel to a removable load 12 which is greater, allowingthe telescopic lever arm 10 to be turned up and down following acircular movement according to the arrow F without being hindered by theremovable load 12.

The rotary handle 11, a user aid for manipulating the telescopic leverarm 10 according to arrow F, can be seen on all the figures.

What is claimed is:
 1. A device for facilitating movement of a load up astaircase, comprising: a load support for supporting said load, saidload support including at least one load support wheel; a frameincluding a plurality of frame wheels; and a lever arm connecting saidframe to said load support, said lever arm being movable in a firstdirection to cause said load support to slide upward relative to saidframe, and being movable in a second direction to cause said loadsupport to slide downward relative to said frame, such that said atleast one load support wheel is caused to move from a first step of saidstaircase on which said plurality of frame wheels is resting to a secondstep of said staircase above said first step when said lever arm ismoved in said first direction, and said plurality of frame wheels arecaused to move from said first step to said second step when said leverarm is subsequently moved in said second direction.
 2. The device as setforth in claim 1, further comprising at least a second load supportwheel integral with said load support.
 3. The device as set forth inclaim 1, wherein said lever arm is telescopic.